JPH0164251U - - Google Patents
Info
- Publication number
- JPH0164251U JPH0164251U JP1987160414U JP16041487U JPH0164251U JP H0164251 U JPH0164251 U JP H0164251U JP 1987160414 U JP1987160414 U JP 1987160414U JP 16041487 U JP16041487 U JP 16041487U JP H0164251 U JPH0164251 U JP H0164251U
- Authority
- JP
- Japan
- Prior art keywords
- comparing
- switching means
- transmitting
- speakerphone
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案の実施例におけるスピーカーホ
ンを示すブロツク図、第２図は同上スイツチング
手段の動作説明図、第３図は従来におけるスピー
カーホンを示すブロツク図、第４図はスピーチネ
ツトワークの回路構成図、第５図はスピーカーホ
ンの外観概略図である。
１：スピーチネツトワーク、２：スピーカーホ
ン回路部、４：スピーカー、５：マイク、８：コ
ンパレータ、１１：コントロール回路、１３，１
４：スイツチング手段。
FIG. 1 is a block diagram showing a speakerphone according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the same switching means, FIG. 3 is a block diagram showing a conventional speakerphone, and FIG. 4 is a diagram showing a speech network. The circuit configuration diagram, FIG. 5, is a schematic external view of the speakerphone. 1: Speech network, 2: Speaker phone circuit section, 4: Speaker, 5: Microphone, 8: Comparator, 11: Control circuit, 13, 1
4: Switching means.
Claims (1)
手段を設けると共に、受話回路及び送話回路に夫
々スイツチング手段を設け、この両スイツチング
手段を上記比較手段による比較結果に基づいてＯ
Ｎ，ＯＦＦ制御してなることを特徴とするスピー
カーホンにおけるハウリング防止装置。 Comparing means for comparing the magnitudes of the receiving input and the transmitting input is provided, and switching means is provided for each of the receiving circuit and the transmitting circuit, and both switching means are operated based on the comparison result by the comparing means.
A howling prevention device in a speakerphone characterized by N, OFF control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987160414U JPH0164251U (en) | 1987-10-19 | 1987-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987160414U JPH0164251U (en) | 1987-10-19 | 1987-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164251U true JPH0164251U (en) | 1989-04-25 |
Family
ID=31442461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987160414U Pending JPH0164251U (en) | 1987-10-19 | 1987-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100260447B1 (en) * | 1997-05-30 | 2000-07-01 | 강병호 | Speaker phone telephone with anti-howling function |
-
1987
- 1987-10-19 JP JP1987160414U patent/JPH0164251U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100260447B1 (en) * | 1997-05-30 | 2000-07-01 | 강병호 | Speaker phone telephone with anti-howling function |